Provide packages for Oracle Linux 8
Provide packages for Oracle Linux 8

Add support for generating Oracle Linux packages from
Enterprise Linux 8 builds.

Closes https://gitlab.com/gitlab-org/omnibus-gitlab/-/issues/6115

Changelog: added

Signed-off-by: Balasankar "Balu" C <250a398eb3bfb9862062144cc742cc8f9bdd8d78@gitlab.com>

gitlabhq/omnibus-gitlab,gitlabhq/omnibus-gitlab,gitlabhq/omnibus-gitlab,gitlabhq/omnibus-gitlab